mysql - 在 SQL 中使用 ORDER BY 子句

Question

是否可以使用关键字来按结果在数据表中出现的次数对我的 SELECT QUERY 中的结果进行排序？

MySQL：

  SELECT * FROM interests ORDER BY (keyword)

表值：

hiking
running
swimming
hiking
photography
swimming
hiking

如果返回它们的顺序基于表中每个值出现的频率，它将是：

hiking
hiking
hiking
swimming
swimming
running
photography

如果没有一个特定的关键字，我如何使用 SQL 来实现这一点？

谢谢

Answer 1

SELECT COUNT(keyword) AS cnt, keyword
FROM interested
GROUP BY keyword
ORDER BY cnt

会按升序为您提供每个关键字的计数。但是你不会得到 3 个远足条目，2 个游泳，等等......只是hiking,3，，swimming,2等等......

Answer 2

SELECT  a.*
FROM    interests a
        INNER JOIN 
        (
            SELECT  keyword, COUNT(*) totalCount
            FROm    interests
            GROUP BY keyword
        ) b ON a.keyword = b.keyword
ORDER   BY b.totalCount DESC

• SQLFiddle 演示

Answer 3

    SELECT 
    t1.*,count(t1.keyword) 
    FROM 
    interests AS t1 INNER JOIN (
     SELECT 
            keyword,count(*) totalcount 
      FROM 
            interests GROUP BY keyword
      )t2 
ON t1.keyword=t2.keyword group by t1.keyword 
   ORDER BY t2.totalcount DESC

Sql Fiddle 演示